/* Phone browser layout. Keep desktop geometry and cloud behavior unchanged. */
.mobile-nav-toggle,.mobile-nav-close,.mobile-nav-backdrop{display:none}
@media(max-width:700px){
  html,body{width:100%;height:100%;overflow:hidden}
  #app,#app.fp-open{height:var(--phone-height,100dvh);grid-template-columns:minmax(0,1fr)}
  #app .main{min-width:0;min-height:0;padding-top:58px}
  #app .side{position:fixed;inset:0 auto 0 0;width:min(300px,86vw);height:var(--phone-height,100dvh);z-index:80;visibility:hidden;transform:translateX(-100%);box-shadow:5px 0 24px #0002}
  #app.mobile-nav-open .side{visibility:visible;transform:none}
  .mobile-nav-toggle{display:grid;place-items:center;position:absolute;top:8px;left:8px;z-index:4;width:44px;height:42px;border:1px solid var(--line);border-radius:9px;font-size:21px;background:white}
  .mobile-nav-close{display:grid;place-items:center;margin-left:auto;width:44px;height:44px;flex:none;font-size:24px}
  #app.mobile-nav-open .mobile-nav-backdrop{display:block;position:fixed;inset:0;z-index:70;background:#0005}
  .side-top{padding:8px 12px;flex-shrink:0}.side-title{font-size:16px}.mark{width:28px;height:28px}
  .new-chat{height:44px;margin:8px 12px;font-size:14px;flex-shrink:0}
  .nav-item{min-height:44px;font-size:14px}.expert{min-height:44px;font-size:14px}.expert .en{font-size:14px}
  .side-foot{flex-wrap:nowrap;padding:12px 10px;padding-bottom:max(12px,env(safe-area-inset-bottom));gap:8px}
  .me-profile{margin-left:0;min-height:44px;padding:0 8px;font-size:12px}.me-sub{min-height:30px;font-size:12px}
  .trial-mode{top:8px;left:60px;right:8px;max-width:none;flex-wrap:nowrap;padding:0;gap:6px;height:42px;overflow-x:auto;border-radius:0}
  .trial-mode .mode-label{display:none}.trial-mode .mode-tab{min-height:42px;padding:8px 10px;font-size:12px;white-space:nowrap;flex-shrink:0}.trial-mode a{white-space:nowrap;font-size:11px;margin-left:0}.quota{display:none}
  .welcome{min-height:0;padding:24px 14px 18px;justify-content:flex-start}.welcome h1{font-size:25px;line-height:1.5;text-align:center;margin:14px 0 18px;overflow-wrap:anywhere}.tabs{margin-bottom:16px}.chips:empty{display:none}
  .composer{flex-shrink:0}.composer textarea{font-size:16px;min-height:88px;max-height:min(180px,28dvh);padding:12px}
  .composer-bar{flex-wrap:nowrap;gap:6px;padding:8px}.composer-note{display:none}.composer-bar .swbtn{display:none}
  .composer-bar .picker{height:40px;font-size:12px;padding:0 9px;min-width:0}
  #mpicker,#mpicker2{margin-left:auto;flex:0 1 auto;max-width:calc(100% - 112px);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .send{width:40px;height:40px;margin-left:auto}.composer-bar .picker:not([hidden])+.send{margin-left:0}
  .chat{min-height:0;padding:12px 0 20px;overscroll-behavior:contain}.msg{padding:0 12px;gap:8px;margin-bottom:22px}.msg .who{width:24px;height:24px;flex-basis:24px}.msg.me .body{max-width:88%;font-size:15px}.msg.agent .body{font-size:15px}
  .dock{flex:0 0 auto;padding:8px 10px max(8px,env(safe-area-inset-bottom))}.dock textarea{min-height:62px}
  .status{flex-wrap:wrap;gap:8px;font-size:11px}.privacy{font-size:11px;padding-bottom:10px}
  .feedback-choices{gap:7px}.feedback-choices span{min-height:40px;padding:8px;font-size:12px}.star-choices span{font-size:25px;min-width:38px;text-align:center;padding:4px 7px}
  .feedback summary{min-height:36px;padding-top:9px;font-size:13px}.feedback textarea{font-size:16px}.feedback-footer button{min-height:40px}.feedback-tags{display:flex;flex-wrap:wrap;gap:8px}
  .answer-actions button,.quote-actions button{min-height:36px}.md pre,.md table{max-width:100%;overflow-x:auto}.md table{display:block}
  .mask{height:var(--phone-height,100dvh);bottom:auto;padding:10px}.modal{width:100%;max-height:100%;min-height:0;border-radius:12px}.modal-hd{padding:16px;flex-shrink:0}.modal-bd{min-height:0;padding:16px;overscroll-behavior:contain}.modal-ft{padding:10px 12px max(10px,env(safe-area-inset-bottom));gap:7px;flex-wrap:wrap;flex-shrink:0}.modal-ft .btn{min-height:42px;padding:0 10px}.modal-ft .steps{font-size:11px}
  .q input,.q input[type=text],.q textarea,.field input{font-size:16px}.q input[type=password]{display:block;width:100%;border:1px solid var(--line);border-radius:8px;padding:10px}.opt{height:auto;min-height:40px;padding:8px 12px}
  .pick-pop{max-width:calc(100vw - 16px);min-width:min(260px,calc(100vw - 16px));max-height:min(55dvh,360px)}.pick-item{min-height:48px;align-items:flex-start;flex-direction:column;gap:2px;font-size:14px}.pick-item small{max-width:100%}
  #login{height:var(--phone-height,100dvh);overflow-y:auto;padding:24px 20px;align-items:safe center}.login-box{width:100%;max-width:380px;flex-shrink:0}.field input,.btn-primary{height:46px}.remember{min-height:36px}
  .view{min-height:0;padding:16px;overflow-y:auto}.kb-grid{grid-template-columns:1fr}
  #app.fp-open .fpgrip{display:none}#app.fp-open .fpanel{position:fixed;inset:0;width:100%!important;height:var(--phone-height,100dvh);z-index:90}.fp-head{flex-wrap:wrap;gap:8px}.fp-acts{flex-wrap:wrap}.fp-x{min-width:44px;min-height:44px}
}